Fitting for hot-water boilers.



No. 738,208. PATENTED SEPT. a, 1903.

J. J. LAWLERr FITTING FOR- HOT WATER BOILERS.

APPLICATION FILED AUG. 8, 1902.

H0 MODEL.

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I11 v 6 12 4 J 1 WITNESSES: INVENTOR g jC/fljar flaw/er ATTORNEY UNITEDSTATES IPatented September 8, 1903.

JAMES J. LAWLER, OF MOUNT VERNON, NEW YORK.

FITTING FOR HOT-WATER BOILERS.

SPECIFICATION forming part of Letters Patent No. 738,208, datedSeptember 8, 1903.

Application filed August 8,1902. Serial No. 118.863. (No model.)

To all whom it may concern.-

Be it known that I, J AMES J. LAWLER, a citizen of the United States,residing at 311 South Third avenue, Mount Vernon, county of lVest-Chester, State of New York, have invented a new and useful Improvementin Fittings for Hotater Boilers, of which the following is aspecification.

My invention relates to a T- fitting adapted to be interposed between akitchen range boiler and the hot-water-return connection, the objectbeing to afford a simple and practical means of adapting such a boilerwhen connected with the water-back of a coal-range, so that either gasor coal can be used as a means for heating the water and for setting upor causing a circulation of the waterin saidboiler.

In the drawings, Figure 1 shows a central sectional view of my improvedfitting, and Fig. 2 is an elevation showing my fitting as connected upon a boiler. Arrows show the direction of the water.

Similar reference-numbers indicate similar parts in the two views.

1 is the so called spud of a kitchenboiler 2.

My improved fitting is in the shape of'a T, the body 3 having anenlargement at the lower end 4, provided with a female thread 5. 3yreason of this shape an annular shoulder 6 is formed. I

7 is a washer between the upper end of spud 1 and the shoulder 6 formaking a tight joint.

The upper end of my improved fitting is provided with a male thread 8,having the same diameter and pitch as the spud 1. The upper surface iscontracted so as to form an annular inner flange 9, which affords abearing for the washer 10, which is used at that point to make awater-tight joint between the fitting and the coupling 11.

lat is a swivel-nut.

12 is a side inlet provided with a female thread for the reception ofthe return or 110twater pipe 13.

The parts of the fitting shown by numbers 3, i, (3, 9, and 12 are allcast integral, the length of the fitting being made as short as possiblefor the reason explained in the operation.

The operation or use of my fitting is as follows Ne will presume akitchen-boiler is connected with the water-back of a coal-range and itis desired to adapt the boiler for storing paper or any suitable washers7 and 10 at the two places shown. By the use of these washers no lead,cement, or other means to make a tight joint need be resorted to, theflat annular surfaces tending to compress the washers evenly, as iscommon in the ordinary couplings. By connecting a pipe 13 from anypreferred gas water-heater (not shown) and by the usual cold-waterconnection (also not shown) a circulation of the water is established.

lVhen lead pipe is used to connect up the hot-water service of a house,such pipe can be easily bent when interposin g my improved T, and whenwrought-m etal pipe is used, owing to the shortness of the fitting, thepipe will spring or yield sufficiently to permit the connecting up to bemade without cutting the house-service.

By the use of my T- fitting the work of converting a boiler for use witheither gas or coal is quickly and cleanly done, as there are no jointsto wipe or any cutting or alteration required in the return-pipes of theboiler.

Such being the full description of my inven- 7 tion, what I claim asnew, and desire to secure by Letters Patent, is

A fitting for hot-water boilers consisting of a body having an enlargedinteriorly-threaded portion at its lower end for connection with theboiler-spud, a should er formed by said enlargement, a washer seating onsaid shoulder and held between same and the boiler-spud,

JAMES J. LAYVLER.

lVitnesses ELIAs WHITNEY, WILLIAM R. MONAHAN.

